A facile solvothermal method for high-quality Gd2Zr2O7 nanopowder preparation

Huang, Zhangyi; Qi, Jianqi; Zhou, Mi; Gong, Yichao; Shi, Qiwu; Yang, Ming‐Bo; Han, Wei; Cao, Zhangkai; Peng, Shuting; Lu, Tiecheng

doi:10.1016/j.ceramint.2017.08.154

Cited by 27 publications

(10 citation statements)

References 32 publications

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“…The starting material we used, nanocrystalline Gd 2 Zr 2 O 7 powder, has a pure defect fluorite phase. It was synthesized by a solvothermal assisted co‐precipitation method followed by calcination at 800°C in air for 4 hours . Subsequently, the as obtained Gd 2 Zr 2 O 7 powders were consolidated into ceramic pellets by field assisted sintering technique (FAST) using a LABOX‐325 system (Sinter Land Inc., Ameike, Nagaoka, Niigata, Japan).…”

Section: Introductionmentioning

confidence: 99%

Defect‐fluorite Gd₂Zr₂O₇ ceramics under helium irradiation: Amorphization, cell volume expansion, and multi‐stage bubble formation

Huang

et al. 2019

J Am Ceram Soc

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Here, we report a study on the radiation resistance enhancement of Gd 2 Zr 2 O 7 nanograin ceramics, in which amorphization, cell volume expansion, and multi-stage helium (He) bubble formation are investigated and discussed. Gd 2 Zr 2 O 7 ceramics with a series of grain sizes (55-221 nm) were synthesized and irradiated by 190 keV He ion beam up to a fluence of 5 × 10 17 ions/cm 2 . Both the degree of post irradiation cell volume expansion and the amorphization fraction appear to be size-dependent.

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Section: Introductionmentioning

confidence: 99%

Defect‐fluorite Gd₂Zr₂O₇ ceramics under helium irradiation: Amorphization, cell volume expansion, and multi‐stage bubble formation

Huang

et al. 2019

J Am Ceram Soc

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“…The length of the nanorods is about 500 nm. Previous studies have shown that well-dispersed nanocrystalline powders can supply abundant surface energy to promote ceramic densi cation [19][20][21].…”

Section: Resultsmentioning

confidence: 99%

An Improving Densification in Spark Plasma Sintering Ultrafine-grained Y2O3 Transparent Ceramic by Particle Fracture and Rearrangement

Huang¹,

Shi²,

Zhang³

et al. 2021

Preprint

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Herein, we report a new strategy on an improving densification in spark plasma sintering (SPS) ultrafine-grained Y2O3 transparent ceramic using anisotropic-shaped nanorod powders. At the low temperature stage (<600°C), fracture and rearrangement of nanorod powders will appear which can further improve the initial density of particle compact and reduce the initial particle size. When the temperature reaches beyond 600°C, the sintering efficiency of nanorod powder compact will exceed that of the green body packed by spherical powders. The ceramic sample sintered at 1300°C from nanorods is transparent with ultra-fine grain and shows good optical and mechanical properties, while the corresponding ceramic from near-spherical nanocrystalline powders is not dense enough and opaque.

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“…Gd 2 Zr 2 O 7 nanocrystalline powders with an average crystallite size of 6.3 ± 0.3 nm were synthesized by a solvothermal method followed by powder calcination at 800°C for 4 hours. The detailed preparation procedures are described in our previous publication . The calcined powders were uniaxially dry‐pressed into Φ10 mm pellets under 8 MPa.…”

Section: Experimental Methodsmentioning

confidence: 99%

“…The detailed preparation procedures are described in our previous publication. 23 The calcined powders were uniaxially dry-pressed into Φ10 mm pellets under 8 MPa. Subsequently, these green pellets were cold isostatically pressed under 200 MPa.…”

Section: Materials Preparationmentioning

confidence: 99%

He irradiation‐induced lattice distortion and surface blistering of Gd₂Zr₂O₇ defect‐fluorite ceramics

et al. 2020

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Gd2Zr2O7 ceramics with different grain sizes ranging from nanoscale to submicron scale (91, 204, and 634 nm) were irradiated at room temperature using 190 keV He ions with doses ranging from 5 × 1016 to 5 × 1017 ions/cm2. We fully characterized the pre‐ and post‐irradiation samples using grazing‐incidence X‐ray diffraction (GIXRD), scanning electron microscope (SEM), and atomic force microscope (AFM) as the grain size and degree of irradiation vary. The results suggested that all three Gd2Zr2O7 samples demonstrate outstanding radiation tolerance to displacement damage by retaining their crystallinity after irradiation at 5 × 1017 ions/cm2. which is equal to 16 displacement per atom (dpa) at peak positions. Although lattice expansion was observed at a He irradiation at 5 × 1016 ions/cm2 and beyond, the lattice remained stable for the nanograin ceramic, while the degree of distortion for the sample with the largest grain size (634 nm) continuously increased. Moreover, a delayed He bubble evolution process was seen for the nanograin ceramic, which did not appear for the submicron‐grained sample. Interestingly, the grain size‐dependent surface blistering was also found to be a function of ion fluence. After He irradiation at 5 × 1017 ions/cm2 the AFM root‐mean‐square(RMS) roughness variation for Gd2Zr2O7 ceramics of 91, 204, and 634 nm were 4.8, 7.0, and 11.1 nm, respectively.

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A facile solvothermal method for high-quality Gd2Zr2O7 nanopowder preparation

Cited by 27 publications

References 32 publications

Defect‐fluorite Gd₂Zr₂O₇ ceramics under helium irradiation: Amorphization, cell volume expansion, and multi‐stage bubble formation

Defect‐fluorite Gd₂Zr₂O₇ ceramics under helium irradiation: Amorphization, cell volume expansion, and multi‐stage bubble formation

An Improving Densification in Spark Plasma Sintering Ultrafine-grained Y2O3 Transparent Ceramic by Particle Fracture and Rearrangement

He irradiation‐induced lattice distortion and surface blistering of Gd₂Zr₂O₇ defect‐fluorite ceramics

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A facile solvothermal method for high-quality Gd2Zr2O7 nanopowder preparation

Cited by 27 publications

References 32 publications

Defect‐fluorite Gd2Zr2O7 ceramics under helium irradiation: Amorphization, cell volume expansion, and multi‐stage bubble formation

Defect‐fluorite Gd2Zr2O7 ceramics under helium irradiation: Amorphization, cell volume expansion, and multi‐stage bubble formation

An Improving Densification in Spark Plasma Sintering Ultrafine-grained Y2O3 Transparent Ceramic by Particle Fracture and Rearrangement

He irradiation‐induced lattice distortion and surface blistering of Gd2Zr2O7 defect‐fluorite ceramics

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Product

Resources

About

Defect‐fluorite Gd₂Zr₂O₇ ceramics under helium irradiation: Amorphization, cell volume expansion, and multi‐stage bubble formation

Defect‐fluorite Gd₂Zr₂O₇ ceramics under helium irradiation: Amorphization, cell volume expansion, and multi‐stage bubble formation

He irradiation‐induced lattice distortion and surface blistering of Gd₂Zr₂O₇ defect‐fluorite ceramics